The height a plant grows is dependent on the amount of fertilizer given to the plant. the table below shows the amount of
fertilizer a plant gets and the height the plant grows
50
fertilizer and height of plant
fertilizer (oz) height of plant
(in.)
175
192
5 8
130
3 6
128
184
56
nina graphs the data in the table and writes the rounded values for a and b as shown below for the regression line y = ax + b

(co 3) the soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. the company takes readings of every 10th bar off the production line. the reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. is the process in control or out of control and why? it is out of control as two of these data points are more than 2 standard deviations from the mean it is in control as the data points more than 2 standard deviations from the mean are far apart it is out of control as one of these data points is more than 3 standard deviations from the mean it is in control as the values jump above and below the mean